Device to be used as telephone-receiver.



K. ORT, J. RIEGBB d: J. K. OB'. DEVICE T0 BB USED AB TILEPHOHE BEUBIVEB. Amman-1011 rum: nov. so, 1901.

.9623159134 hunted July 12,1910

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K.- OR", J. RIEGBB J. K..0BT. mman 'ro Bx: usm As 'rsuzroxn nnumnn.

APPLIOATIOI FILED HOV. 29, 1907.

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' application of `UNiTEJo siA'ilEs PATENT. OFFICE.

xml'. ORT, Ol' IOBTICE 0N lGll, JOlF JOB!! um ORT, 0l' EOTICE 0N EGEL, AUSTRIA-HUNGARY.

DRVIOITOBEUBXDASTELEPEONE Tb all whom it may concern: Y Be it known that we, Kann. Grrr, of Kos- Jossr Risen, of Domausioe, near`Louny, and Josnr Kim. Om', of Koatioe on Eger, all thnee in the K om of Bohemia, Austrian Empire, and a 1 three subjects of the Austrian Emperor, have invented new and useful Im roveinents in Devices to be Ueed'as Telep one-Receivers, of which the followin is the ilication.

Our invention re ates to improvements in soundmeoeiving devices and artiularly to un arrangement of condenser o be used as a telephone receiver, serving to transmit sounds by means of electric current; `and the ob'ets of our improvement are first, to prog vi e a cheap receiver for articu ated sounds,

speeches,.musical sounds and singing; second,t provide a system'by which instrumenta i, usical tones, singing, etc., may be tiansmitlhdiand reproduced with t naturalness andistinctness, and thiretao provide 'an arrangement of condenser-receiver for use for the above purpoees`which will vibrate correctly by moans of the interposition of an appropriate stretching device.

We attain these objects by the a tus illustrated in the accompanying rawings, in whichi l Figures VLand 2 show a crosection and a horizontal view' of the receiving device' Figs. 3 and4 a cross section and a vertical view of a receivin disk mounted on porcelain insulators; Igigs. 5 and 6 a cross section and a plan view respectively of :i telephone receiver showing another example of the diaphragm receiving device; F ige, 7 to 10 are examples of various arran ments of circuits.

Similar characters refer to similar parts throughout the several views.

'Qur condenser receivin disk is composed of two series of [mrallc supe foils, which are separated from eac other by papers or the diaphragme 1, one series of said foils being conductively connected t0- gether and to the le at one end 3, of the disk, while the ot er series is conductively' connected together at the other end 6, and then to the ole of the circuit. It is referabl arranged) by making the papers broader t an the foils, and the foils ut one end extending 'yond the paper, and therefore the paper l'ecting on three sides beyond the foils, asis own for instance in Fig.

Indication of Lettere Patent. Application iisd November Patented July 112, 1910. im. semi no. 404,4

projecting ends 5 and 2 by the rim 4. The

together on one side, the foils o the sys'- 'tem conductively connected together on the vopposite side and each foil is separated from t e next foil by a( dielectric elastica] thin layer of paper, mica or the like, and then -tension is given by an appropriate device to all the paper layers together. Said combmed disk is interposed into the circuit by its clamp (a) and clamp (b) in an 'apgro riate way. ai diaphra sound-receiving device can be arranged orizontally upon insulators 14 in a casing 1.3, covered on both sides with paper or the like 7, 8, and rovided with elastic bands, 9 to 12, and con uctin s rings m and n upon conducting plates, w ich thus connect each system of said foils one with the and the other with the -lpole, by means of clamps (a) and (b).

.Another example application of our combined diaphragm disk, as used for the telephone receiver 17, is shown in Figs. and 6, said apparatus being h by its conducting rims 15 and 16 elastical y in its cas ing 17 so that its insulatin diaphragms of paper or the like may. conveniently stretched all at once and their tension regulated by an appro riate device, which consis'ts preferably o regulating screws 18 as shown.

-Referrin to 7 to 10, the condenser 90 receiver, w ich in these tiguresis lettered C is interpolated either in a circuit having a transformer T, by means of which it is connected witlifthe telephonic circuit, having a battery of e ements at B, and a. microphone at M (Fig. 7) or it is installed without a transformer (iiig. .9) in both preceding cases a continuous current dynamo D can be 'interpolated into the circuit as is shown in Fi 8 and 10. Said dynamo stron 'thens t e'sound considerably; but in sucia, combination caro must be taken to suppress the sounds of the machine, which as known are produced by the collector and can be su pressed either by the trnmfnrmorT itself 105 l 8),or by special coils l( (Fig. 10').

The action' of diephragms in our conibined transmitting disk appears in compari- 'son to the usual disphragms to be multii connected to the g BEST AVAILABLE COPY "M841 missive currents produce a very strong and exact reproduction of original sounds. No batteries are used directly in the circuit of the condenser, and by the arrangement rovided, the condenser foils are stre ed ltlurcu hout their whole planes. Said foils, there ore, will vibrate easily even under the iiiuence of weak microphonic currents, the letter being transformed into higher tension in the induction coil.

We claim 1. A device to be used es a tclephone re ceiver, whifch of. su d 6inhragmso con uc' materia, ternatc lsyers o`f the same 'connected to er in one series to form x continuous, con uctor mid connected to the positive pole of an electric circuit, and the reina' alternate layers being nnected in a secon series and negative pole of said urer of elastic dielectric mnteill inte between each two cond diaphragme, and means for elastically suapending the whole.

2. A device to be -used as a telephone receiver, which consista of supe dinphrngms of conducting material, lalternate layers of the'same being connected to ther cuit, n la in one series to form a continuous con uctorund connected to the positive pole of an electric circuit, and the remainng alternate layers being connected in a second series and connected to the negative pole of said circuit, a layer of elastic dielectric material interposed between each two conducting diaphra means for elastically suspending the w ole, and means for regulating the tension of the elastic layers.

3. A. device to be used as n telephone receiver, which consists of supe'xpoced iliaihmgms of conducting materi alternate ayers of the same being connected ther in one series to form a continuous con uctor and connected to the positive pole of. an electric circuit, 1nd the remaining alteriite layers being lconnected in a second series'.

and connected to the negati-ve pole of circuit, o, layer of elnstic diclecfric imii-ri'ii interpoed between nach iwo conducting li ihragms, e. suitable casing for inclosing,r f1.1v yers and in which they nre clnstically su peinled, and regulating screws for sdjuslin;l the tension of the elastic layers.

'4. A device to be used es a tnleplio io rc ceiver, which consists of supei'ioseiix fahragms of condbcting materia, alterimhY myers of the same being connected to futher in one series to form s continuous con uctor and connected to the positive Dole of en electric circuit, and the remain' alternate layers being connected in a secon series end connected to the negative pole of said circuit, a laver of. elastic dielectric material inte l between each two conducting diagms, means for elastically suspending he layers, and means for re ulating the tot sion of the elastic layers,

interposed into a circuit having a .transl formerz the primary of which is included iiil a circuit having n suitable source of energy and a microphone trxnsmitter.

5.' A system for truneinittinglndrepioN ducing sound, com rising s suitable source of electrical energy/, circuit including scid source of cnergv a telephone transmitter inte sed in sui circuit, a transformer. n circuit includingY the secondary of said tinus former, u, condenser interposed in said circuit, seid condenser being formed of alter mite layersl of conducting and dielectric elastic material, means for elsstically surpendi the said layers, and incans for regulating t e tension of the layers.

In testimony whereof we aix our signs.-

tures in presence of two witnesses.

KAREL 'cnr JOSEF ineens. JOSEF KAREL om:

Witnesses:

Amira Fisoimn, Lsnismlv VoJcnsz.

dlui" e whole being- 

